Revenue from a two-connector AC station is the tariff basis you choose, times the energy sold, times how busy the connectors are — and the two-connector design changes the maths. Both connectors share one 43 kW ceiling, so session length — and what a session earns on a time-based tariff — depends on the second car and each car’s own charging rate. A workable plan sets the structure first, then feeds it measured numbers. There is no standard rate to copy.
Key Takeaways
- Revenue = tariff basis × energy sold × utilisation — the last two are yours to measure, never to borrow.
- On a shared 43 kW ceiling, per-minute pricing quietly charges slower, shared sessions more per kWh.
- The second connector adds sessions, not peak power: combined output is capped at 43 kW.
- Reprice from a season of platform reports, not one busy month.
The Three Inputs Are All Yours to Measure
A revenue plan for one station has three inputs: the price basis, the energy sold per session, and the utilisation of each connector — sessions per day and hours occupied. One of the three is a decision; the other two come only from your own site, reported by your platform after a trial period. Anyone quoting a typical utilisation is describing someone else’s car park: a station outside offices and one at a leisure site sell different energy through identical hardware. Our overview of whether a charging station business is profitable makes the same point at business level.
How Each Tariff Basis Behaves When Two Cars Share
| Tariff basis | What the driver pays for | Behaviour on a shared-ceiling station |
|---|---|---|
| Per kWh | Energy delivered | Sharing-neutral: a slower shared session still pays the same per kWh received |
| Per minute | Time connected | A car drawing less power — the other connector busy, or a slower onboard charger — pays more for each kWh received |
| Per session | One plug-in | Simple to run; short top-ups overpay, long sessions underpay |
| Bundled with parking | The parking product | Charging becomes an amenity line; time after charging ends needs its own rule (an overstay fee) |
The generic case for each basis is in our pricing models guide. The station-specific question is the middle column: on a shared ceiling, a time-based price transfers the cost of sharing onto the driver who charges alongside someone else. Many operators accept that for faster turnover.
A Worked Example — Every Number Invented
The figures in this section are invented for illustration; replace them with your own. Suppose one station runs six sessions a day across both connectors, averaging 18 kWh a session: 108 kWh sold per day. At an invented price of €0.40 per kWh, gross energy revenue is about €43 a day, or about €1,296 over a 30-day month. Against that, subtract your own cost lines: electricity at your supply tariff, including any demand-related element; your platform fee; payment processing; maintenance. For scale only, the U.S. EIA puts average commercial electricity at 14.53 cents per kWh — a U.S. reference, not your tariff. Notice what the ceiling does: a busy second connector adds sessions, but combined output never exceeds 43 kW, so energy sold per hour is capped, however the cars arrange themselves.
Reprice From Your Own Reports, Not From Benchmarks
The station reports sessions to your platform over OCPP 1.6J, so the repricing data is already flowing: track kWh per session, sessions per connector per day, and occupied hours. If one connector is busy and the other idle, the problem is layout or signage, not price. If sessions are long and bays block, an overstay fee is a turnover tool, not extra margin. Review against a full season of figures before changing it — a structure set on one busy month will misprice the other eleven.
The Station in This Plan
The EV-AC03201T dual-connector AC station — two Type 2 connectors, up to 43 kW shared (22 kW per connector), RFID access, OCPP 1.6J, IP54 — is the hardware behind the arithmetic above. What the platform connection should provide is in our OCPP explainer for operators, and larger sites can build on our commercial EV charging solutions.
Frequently Asked Questions
What utilisation should I put in the plan?
Your own measured figure, after a trial period covering quiet and busy weeks. No published typical rate exists for a site like yours; a borrowed benchmark misprices in both directions.
Does the second connector double the revenue?
Only if drivers come. The ceiling is shared, so two cars split up to 43 kW: the second connector adds sessions and convenience, not a second 43 kW.
Per kWh or per minute on this station?
Per kWh keeps the price per unit of energy steady when sharing slows a session; per minute rewards turnover but charges slower sessions more per kWh. A policy choice about fairness and turnover, not a technical requirement.
Related Reading
- How Much Do EV Charging Stations Charge? Pricing Models Explained
- Is an EV Charging Station Business Profitable?
- OCPP Explained: What Charge Point Operators Need From EV Charger Hardware
